I recall seeing it many times (and ... mostly sometimes heeding the admonition). A lot of times you’ll see a solution snippet with inadequate exception handlin

I recall seeing it many times (and ... mostly sometimes heeding the admonition). A lot of times you’ll see a solution snippet with inadequate exception handling or resource cleanup (file handles, dB handles, etc.). I’ve also seen a lot of regex examples that show a principle but don’t handle edge cases. See as canonical... email validation.